Functionalized graphene oxide curable formulations

Patent metadata

Field	Value
Publication number	US-11905387-B2
Application number	US-202017108170-A
Country	US
Kind code	B2
Filing date	Dec 1, 2020
Priority date	Dec 21, 2017
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A method of producing functionalized graphene oxide includes mixing graphene oxide with a reactive monomer containing at least one epoxy functional group and a secondary functional group that is selected from vinyl, acrylate, methacrylate, and epoxy to form a mixture, adding an activation agent, heating and stirring the mixture, cooling the mixture, separating the particles from the mixture, and drying the particles to produce functionalized graphene oxide. A method of manufacturing a cured polymer resin using functionalized graphene oxide includes mixing functionalized graphene oxide with a resin precursor to produce a functionalized graphene mixture, wherein the particles contain functional groups nearly identical to, or identical to, a polymer precursor material, adding a curing initiator to the functionalized graphene mixture and mixing to produce a formulation, depositing the formulation into a desired shape, and curing the formulation to form a polymer having functionalized graphene oxide groups in a base polymer material.

First claim

What is claimed is:

1. A method of manufacturing a cured polymer resin using functionalized graphene oxide, comprising:
mixing functionalized graphene oxide with a resin precursor to produce a functionalized graphene mixture, wherein the particles contain functional groups identical to a reactive precursor in the resin precursor and cure at a same time as a polymer precursor material in the resin precursor;
adding a curing initiator to the functionalized graphene mixture and mixing to produce a formulation;
depositing the formulation into a desired shape; and
curing the formulation with at least one temperature of 220° C. to form a polymer having functionalized graphene oxide groups in a base polymer material.

2. The method of claim 1 , wherein depositing the formulation into the desired shape comprises injection molding.

3. The method of claim 1 , wherein depositing the formulation into a desired shape comprises 3D printing by extrusion through a nozzle.

4. The method of claim 1 , wherein curing comprises curing at a first temperature and then curing at a second temperature of 220° C. that is higher than the first temperature.

5. The method of claim 1 , wherein the desired shape is a coated film onto one of a substrate or a standalone film after substrate removal.

6. The method in claim 1 , wherein the functionalized graphene oxide and resin precursor contain epoxy groups and the curing initiator is an ionic liquid.

7. The method of claim 6 , wherein the resin precursor material comprises an epoxy material and the curing initiator comprises an organic amino hardener material and the first curing temperature is ambient room temperature.

8. The method as claimed in claim 1 , wherein mixing the functionalized graphene oxide with a resin precursor includes mixing the functionalized graphene and the resin precursor with a solvent.

9. The method as claimed in claim 1 , wherein the resin precursor is epoxy and adding the curing initiator comprises adding a latent curing agent.

10. The method as claimed in claim 9 , further comprising initiating the latent curing agent.

11. The method as claimed in claim 1 , wherein adding the curing initiator comprises adding a radical initiator.

12. The method as claimed in claim 11 , wherein the radical initiator comprises a thermal initiator.

Assignees

• Palo Alto Res Ct Inc
• Xerox Corp

Inventors

• Wei Junhua
• Iftime Gabriel
• Johnson David Mathew
• Baker Rivest Jessica Louis

Classifications

• C08K3/042 Primary

  Graphene or derivatives, e.g. graphene oxides · CPC title

• B29C64/00

  Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering · CPC title

• B33Y70/10

  Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials · CPC title

• C01B32/198

  Graphene oxide · CPC title

• C07C69/54

  Acrylic acid esters; Methacrylic acid esters · CPC title